[化] 化学成分; 化学组成

chemical composition的用法和样例：

例句

Chemical Consitituents of Gentiana apiata N.E. Br.秦岭龙胆的化学成分。
Chemical constituents of Achyranthes bidentata Bl.牛膝的化学成分。

U.S. Begins Chemical Weapons Burn

By Cynthia Kirk Broadcast: August 15, 2003 This is Bill White with the VOA Special English Environment Report. In the United States, the Army has started to destroy old chemical weapons at a base in t

发表于:2018-12-01 / 阅读(196) / 评论(0)

VOA2003（下）-环境与健康

UN Official to Arrive Syria for Chemical Attacks

UN Under-Secretary-General Angela Kane is due to arrive in Damascus later today to push for access to the site of alleged chemical attacks for UN inspectors. The move comes after the Syrian opposition accused President Bashar al-Assad's forces of kil

发表于:2018-12-02 / 阅读(166) / 评论(0)

世界各地新闻集锦

英文笑话：The Composition Class 作文课

The students in the composition class were assigned the task of writing an essay on the most beautiful thing I ever saw. The student who, of all the members of the class seemed the least sensitive to beauty, handed in his paper first with astonishin

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英文笑话

Syria, Russia Accuse US of Lying about Chemical Weapons Attacks

Syria and Russia say the United States has lied about chemical weapons attacks in the Syrian conflict as a way of blocking efforts to end the fighting. A Syrian foreign ministry source condemned what it called lies and allegations by U.S. Secretary o

发表于:2019-01-03 / 阅读(131) / 评论(0)

2018年VOA慢速英语(一)月

Scientists: Ozone-Eating Chemical Mysteriously Rising

Scientists have found that levels of a now-banned chemical are rising again in Earths atmosphere. The chemical is called CFC-11. It is the second most common kind of CFC, short for chlorofluorocarbon. Chlorofluorocarbons were once widely used in many

发表于:2019-01-03 / 阅读(165) / 评论(0)

2018年VOA慢速英语(五)月

VOA标准英语2008年-US Chemical Giant Faces Hurdles in India Due to

By Steve Herman Bhopal, India 08 January 2008 Dow Chemical, the world's second-largest chemical manufacturer, is facing difficulties trying to expand in India. The company is haunted by the 1984 leak of methyl isocyanate, one of the most lethal chemi

发表于:2019-01-07 / 阅读(191) / 评论(0)

VOA标准英语2008年（一月）

AS IT IS 2016-03-13 US Holds IS Fighter Who Was Key to Chemical Weapons

AS IT IS 2016-03-13 US Holds IS Fighter Who Was Key to Chemical Weapons U.S. military officials say they captured a key person in the Islamic States chemical weapons program in Iraq. The IS operative was captured by American special-operations forces

发表于:2019-01-12 / 阅读(160) / 评论(0)

2016年VOA慢速英语(三)月

VOA标准英语2013--Common Chemical May Damage Teeth

Common Chemical May Damage Teeth A chemical compound thats been linked to a number of health problems in animal studies may also damage tooth enamel in humans. BPA is found in many resins and plastics that people use everyday, such as water and baby

发表于:2019-01-14 / 阅读(170) / 评论(0)

VOA标准英语2013年(六月)

China to Start a Nationwide Inspection of Chemical Plants

In the wake of several serious chemical pollution incidents, China's Ministry of Environmental Protection says it will begin a nationwide inspection of all certified producers of dangerous chemicals of their pollution control measures. As Liu Yan rep

发表于:2019-01-19 / 阅读(134) / 评论(0)

世界各地新闻集锦

英文歌曲:Chemical Rush

Chemical Rush Brian Mcfadden Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white Feel it coming on Like a pulse in my head Sending chills right

发表于:2019-02-07 / 阅读(139) / 评论(0)

好听的英文歌曲

英语歌曲：音乐+爱情的化学反应 Chemical Rush

音乐+爱情的化学反应：Chemical Rush 还是Brian Mcfadden小编对BB的新专辑实在不能不执着啊~这首依旧是混杂了电子风的Chemical Rush，稍微有些中规中矩，和专辑中电音味道更重的歌比起来，有些收敛

发表于:2019-02-11 / 阅读(120) / 评论(0)

经典英文歌曲

英语歌曲:音乐+爱情的化学反应-Chemical Rush

音乐+爱情的化学反应：Chemical Rush Artist：Brian Mcfadden Song：Chemical Rush Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white F

发表于:2019-02-17 / 阅读(149) / 评论(0)

流行英文歌曲

英语摇滚:音乐+爱情的化学反应：Chemical Rush

发表于:2019-02-18 / 阅读(153) / 评论(0)

英文摇滚歌曲

提高英语口语的秘密

提高英语口语的方法 (1). We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to

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英语学习方法

高效的英语口语学习方法

高效的英语口语学习方法口语学习方法总汇，但方法毕竟只是方法，它最终无法取代刻苦的学习，一起来看看总结出来的口语学习方法都有哪些吧。 (1)。We study spoken English so as to make oral comm

发表于:2019-02-19 / 阅读(187) / 评论(0)

英语学习方法

英语口语的学习方法

英语口语的学习方法方法就是方法，它最终无法取代刻苦的学习。 Oral English：（口语学习方法总汇）（1）。We study spoken English so as to make oral communications， so this order of importance of oral English

发表于:2019-02-19 / 阅读(141) / 评论(0)

英语学习方法

妙招学口语（下）

妙招学口语（下） (6)、Oral composition and 3-minute training method: This method is suitable for intense training. Making an oral composition about a certain topic for one minute thefirst time and record the composition on tape at the sameti

发表于:2019-02-26 / 阅读(123) / 评论(0)

英语口语

摇滚歌曲：Chemical Rush

Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white Feel it coming on Like a pulse in my head Sending chills right through my bones Keep coming

发表于:2019-03-02 / 阅读(178) / 评论(0)

英文摇滚歌曲

英语口语最全学习方法

(1).We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abil

发表于:2019-03-02 / 阅读(162) / 评论(0)

英语口语

小学英语写作范文：感恩父亲

小学英语写作范文：感恩父亲 Dear Dad: You have worked hard! In the past, I am always afraid to you and positive dialogue. Every time something was always afraid to tell you. Because when you face the total serious. Today to take this oppo

发表于:2019-03-17 / 阅读(1639) / 评论(0)

英语作文

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学英语单词

Acetobacter suboxydans

acid ammonium malate

across span lift distribution